<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<script>
    // [...]扩展运算符能将数组转换为都好分隔的[参数序列]
        const star =['四字','三字','二字'];
    function FN(){
        console.log(arguments);
    }
    // 此时是一个数组
    // FN(star)  
    FN(...star)  //FN('四字','三字','二字')
</script>
</body>
</html>